Pumping system



Patented Feb. 5, 1946 UNITED STAT-Es PATENT oFFlcE PUMPING SYSTEM Armjstead Leake, Mobile, Ala., assigner to Lero Patent Cup Co., Inc., Mobile, Ala.

pplication vJune 9, 1944, Serial No. 539,435

(Cl. 10S-25) 1 Claim.

This invention relates to pumps and pumping equipment and it has particular reference to water pumps and especially to a pumping system.

The principal object of the invention is to pro- `vide what actually constitutes a, pumping system,

Whose exceptionally simple design and assembly render it highly adaptable for use on farms and in rural districts where municipal water pressures are not available. The small number of Working parts in the system and the particular arrangement thereof makes for speedy and convenient assembly and replacement as well Vas providing, in a reciprocating pump of this character, effective means for reducing leakage to a negligible degree. v

Another object of the invention is to adapt the highly advantageous principle of the reciprocating pump to a pumping system capable of convenient attachment to the casing of a common water well and by the simple expedient of connecting the motor of the pump to available electrical source, the system is placed in condition for operation.

Still another object of the invention is to'provide automatic means for starting and stopping the motor as pressures in the system vary. Moreover, in event of failure of the automatic means to function properly under maximum pressure, provision is made for automatically effecting disengagement of the driving belt from the main shaft pulley to prevent overloading the motor.

With the foregoing objects as paramount, the invention has further reference toV certain features of accomplishment which will become apparent as the description proceeds, taken in connection with the a-ccompanying drawing wherein:

Figure 1 is a perspective view of a pumping system constructed according to the present invention with parts of the tank and bowl cut away.

Figure 2 is a side elevational half View of the tank and bowl, showing the discharge or service outlet.

Figure 3 is a fragmentary View of the pumping assembly in vertical section, and

Figure 4 is a detail view of one of the connecting rod bearings.

Continuing with a more detailed description of the drawing, reference is made primarily to Figure 1 wherein numeral I0 denotes a tank or reservoir, closed at the top and provided at its base with a right angle, annular flange II. Below the tank I is a bowl I2, which, in conjunction with an intermediate plate I3, defines a chamber I4. The bowl I2 has an annular flange I5 about its upper rim, the outer edge of which is turned upwardly to embrace the perimeter of the tank flange Has well as that of the plate I3 which is interposed between the two flanges I I and I5. Gaskets IB'are disposed between the flange I I and plate I3 and between the latter and iiange I5 and a plurality of bolts il serve'to hold the assembly securely together.

The bowl I2 converges at its bottom about an intake pipe I8 which is preferably internally threaded to receive the stand pipe or casing of a well, no-t shown. Water constrained to move upwardly into the tank I0 ina manner to be presently explained, is drawn off through the outlet or service pipe I9 (Fig. 2), which may extend to a point of consumption, but for purposes of illustration, carries a T 20 anda faucet 2|.

At diametrically opposite points in the walls of the tank I0, there are provided bushings 22, welded or otherwise firmly secured in place. These bushings contain bronze bushings 22a. which serve as bearings for a shaft 23, which latter extends entirely through thetank, The inner diametenof the bushings 22 is greater than that of the shaft 23, to accommodate bronze bushings 22a and to define an annular space in each bushing, to ll which, packing washers 24 are inserted to snugly embrace the shaft and prevent leakage of water from the tank, As a further precaution against leakagea cap 25 is threaded onto one end of one bushing-22 while the opposite bushing carries a packing gland comprised of'anut 26 containing a gasket 21 which is compressed against the outer end of the bushing by the nut.

Mounted on the shaft 23 isa crank composed of a sleeve 28, held against rotation on the shaft by a set screw 29. Formed on each end of the sleeve 28 is an eccentric 30 and to each eccentric is aixed a hollow crank pin 3|. Obviously, the cranks 3i may be formed integrally with the eccentrics and 'sleeve 28 but it has been found to be more economical and to produce better results to construct the crank in the manner shown, By making the cranks hollow, the assembly is much lighter and less power is utilized in operating the 'pump The shaft 23 and 'sleeve 23 are made of materials immune to rust and corrosion and, although these ,parts are constantly submerged in water, no ill effects are caused either to the parts or to the water passing through the system.

Embracing the cranks 3| are the straps 32 of connecting rods 33, and interposed between the straps and cranks are bearings S .(Fig. 4) of rubber but of conventional manufacture, known as cutless bearings. The connecting rods 33 355 carry conventional pistons made up of valve Cases 35; spring controlled valves 36 and leathers 31, the latter being held in fixed relation to the cages by means of the removable valve seats 38, threadedly entering the bottoms of the cages as shown in Figure 3 particularly.

Pressed into apertures in the plate I3 disposed intermediate the tank I0 and bowl are cups 39 which serve as cylinders and receive the pistons. These cylinderseach have intake .ports-a. at the bottom, fclosedfbyvalvesll, the latterbeingco'n l0 trolled by springs 4l, surrounding stemsI 42"`below the cylinders 39. Mounted in the bottom of the. bowl l2 is a standing valve 43 (Fig. 1), which" controls ports 44 in its seat and preventsf'liquid from returning to the well onceit has been ele- 15.

vated by reciprocating action' offtlietpi'stcii'isf This valve is gravity controlled.

To reciprocate the pistons, .adrivelpulleyiz ist secured to the extended end of the shaft 23 by means of a collar 46 and set screw 41. ItWlll-bergo particularly; noted that `this pulley.- hassasiiange won-the insde'only offitsfrim andcarriesa -drivnig-ebeltF49:y V'I'he -objectvoithstsingle .hanger-'is to?. permit-the belt-49 -to ridetoff-the pulley, in eventaofeexcessiveipressuregcausingthe shaftto 25 becomeediflicultfto-1 turn. Thus, overloadingfthe motor 5U to a degree flikelygto-fcause-damagethere to is :rendered .,1mpossible. f Theibeltsrsurrounds aigrooved pulley 5 I on .-thefar-mature .shaft cf [the motor-,f thereby; completing the. drivel.. to the 30 shaft;- Y y 'Ihe-motor-f issupportedfon-fmountingmrack etsz52 a'stenedto thebaelcoi the tank -llantlflby Virtuefoi-slotse 3freceivingfsnountingbolts 54the motorlo maybe raisedandeloweredswithrespect 35 to the tankffandibyesoidoing;theibelt A49 isti'ght'- enedforloosened,fasrequirela` A c n Asupplysof waterxis maintained infthetank .l 0 at fall timestoinsureadequate-,pressure for, dliveryfusually aboutf40 pounds, althoughths may 40 varys.v To .insure such .supply-,anautomati'c switch 55 issprovided-of! conventional inanufacti're.y This svvitchtisscontrolled'- by aaiiapl'i'ifagm (not shown) whiohfis deflected at-.apiedeterminedmaximum pressure .tto actuate the rs w-itclgiftoopentl'u `frnotor 45 circuitfrthroughewires562 Whensftlfie iminimum pressure gprevails .in ltheatankl nfth'e .diaphragm yieldshtsuperior spring.: pressure't closeth`e motoncircuit,startingthe pump.

Itasometimesshappensgthatithepump, beom'- 50 inggwaterilogged,-fwilllfrequentlyfstrt'fand-stop withsfneeifect except`tov impose.. undueS-w'ea Ion the motor; 1 Toovercome.suchlcondtion; ablee'der port fisiprovided in-.th'e-tbe.,:wh'icli` .leads from'the tank to the switch 55, which port is covered normally by a screw 51 (Fig. 1). The current to the motor 50 is turned oif and the faucets are opened. As soon as water ceases to ow through the faucets, the screw 51 is removed to allow additional Water to drain from the tank. The screw 51 is replaced and the current turned on, after which the pump is again ready for normal operation.

Itis apparentfrom the foregoing that particularly through and byvi'rtue of the lunsual design of the mechanism for imparting motion to the pistons, the cylinders, the mounting plate therefr and the bowl of the tank, there is provided a punip'exceptionally light in weight but sturdy in construction. This has its advantages, not only iiisliippngand :installing but likewise represents a considrable saving in material and manufacturier-anufrminimizes Work of assembling.

Manifestly, the construction as shown and described 'is capable of some modication and such modifica-tionA as-f may be Vconstruedf -toffall :within theescopeand :meaning of fthe appended; claim is` also.` considered.y tov bezwi-thin` the` spirit f andiintent of the invention..

What is fclaimed is z In :as water pumpinga system... the combination comprisingfa storage :tank` ha-Vingfan outlet;Y a bowl .-detaehablymountedon-thezllower end of saluta-nk,V afplate whose .perimeter-is interposed .betweenV said-tanki and bowl, constituting; a 4partitiontherebetween. i and defining a chamber in said bowl, parallel cylindersdepending from said plate, `valves vinv said .'cylinder, .,diametrically.- opposed, tubular bearings-itemized; in- '1 the Y. wallseof said tank above said plate, having threaded-outer ends, aV-shaft extending.; diametrlcally across. and entirely through saidtank andthrough said bear'- ings, packingeembracingt saidv shaft` :withinl said bearings, packing glands threadedonto.-Y the` ends ofi said bearings; hollow-e ccentrics.,i opposedlyf afxed ,-.to :theintermediate eportionwof f-saidf`shaft, connectingA rods-mounted on (said, eccentricspistons having valved passages for therI iiowf.l of pumped.- liquid. and arrangedeto. befrreciprocated bysaid.-..rods lin `said .cylinders-,.aepulleyfon Vannextended end =off-saidsliaft,i amotor-.and` belt means foridrivingesaidtpulleyf.andarvalvedffinlet imthe besefoffisaidsbowl f forJ admittingfwaten: intofsaid bowl. .undera the einiiuencef.offasaidspistonsrto. be elevated :therebyg-intofsaid .ltank,fmeans-for.draw ingfwater :from:said.tank. and-,means .responsive to; variationseof i pressure ..in.said.` tank/for `:Opening, and iclosing ,.thescircut .to rsaid moton ARMISTEAD LEAKE, 

